Drain fitting for wash sinks and the like



Oct. 6, 1953 M. a. EPSTEIN DRAIN FITTING FOR WASH SINKS AND.THE LIKE Filed Dec. 18, 1950 v w v 8 wuv FIG.3

FIG.4

- Maurzce Re. wf f m Patented Oct. 6, 1953 UNITED STATES PATENT, OFFICE DRAIN FITTING FOR WASH SINKS AND THE LIKE Maurice B. Epstein, Brcoklyn, N. Y. Application December 18, 1950, Serial No. 201,336

4 Claims. 1

My invention is an improved drain fitting with sieve attached for screening out particles of food, grease and the like; particularly a drain fitting which can readily be used with wash sinks in kitchens and similar establishments.

An important object of this invention is to provide a simple and inexpensive fitting that can be easily installed and removed, and of such design that the sieve can be quickly taken out when necessary for cleaning or replacement.

The nature of the invention is clearly set forth hereinafter, and the construction thereof is i1- lustrated in the accompanying drawings. But while I show the invention in one Or more preferred forms, I do not wish to be limited to the exact details of design shown herein, as variations in structure may be adopted without alteration of the principal characteristics of the device.

On the drawings:

Figure 1 is a longitudinal sectional view of a fitting according to this invention.

Figure 2 is a cross section on line 2-4 of Figure 1.

Figure 3 is an enlarged sectional detail; and

Figure 4 is a similar detail of a modification.

The numeral I indicates a portion of a sink in a kitchen or the like, the sink having a drain outlet 2. with an inside shoulder 3. On this shoulder rests an external flange 4 at the upper end of a drain pipe 5. The pipe 5 of course is often connected to the sink by means of screw threads, welding and other methods.

The fitting in which my invention is embodied includes a tubular member 6, such as a short length of pipe; and united thereto at one is a sleeve 1; which can also be a short piece of pipe; the member 6 and the sleeve having screw threads 8 so that the member and sleeve can be readily joined by screwing them together, with the end of the member 6 enveloping the sleeve. The inner end of the fitting thus presents an inside supporting shoulder 9 formed by the inner end of the sleeve I, and supports a sieve I made of a circular piece of wire mesh to strain out particles of food and grease that otherwise might collect in the drain and after a time obstruct it.

The fitting is supported in the pipe Ii at the outlet 2 by screwing it into place. The upper end of the member 6 has a slightly increased outside diameter with screw threads thereon; and the inside of the pipe 5 within the flange 4 has matching threads; as indicated at i l. The

fitting, with or without the sieve III in place, can

simply be inserted into the pipe and turned till it is tight in the position shown in Figure 1. Whenever it needs to be taken out, it is turned in the reverse direction by hand till the threads H are disengaged. Thus ordinary sinks can be easily adapted for use with the fitting merely by threading the drain pipe 5 at the junction of the sink I and the pipe 5, with the threads on the inside of the pipe.

The sieve I0 is mounted in a ring 12 that has a groove I3 around its inner edge to seat the outer edge of the piece of mesh l0. Affixed to the top of the ring I2 is a ball 15, made of a piece of resilient wire with its ends welded or otherwise made fast to the ring I2. The ring is of a diameter that fits easily inside the member 6, but it is split at the ends of a diameter between the ends of the bail l5, as illustrated at M. Therefore, when the ring and sieve are in place with the ring holding the sieve, and the ring in contact with the shoulder 9, the ring l2 will be held together with the ends in contact, by the member 6; but the ring and sieve can be pulled out by the bail [5. Being resilient, the bail will allow the halves of the ring l2 to be separated so that the sieve can be removed and cleaned or replaced. The ring and sieve are then put back into the member 6, and the fitting is then ready for further use. The bail, when the ring I2 engages the shoulder 9, is wholly within the fitting, and never interferes with the washing of dishes therein. The bail is connected to the top of the ring by bent ends I6 welded to the ring I2.

The shoulder may be either perpendicular to the inside of the member 6, or bevelled. The ring l2 can be of metal or other material such as hard rubber ll, as shown in Figure 4. Here the lower side of the ring I? is bevelled as shown at 18, and makes contact with a bevelled shoulder or seat IS on the sleeve 1. The ends l6 of the bail are inserted into recessed lugs 20 on the r ng.

The fitting is thus simple, inexpensive to make, practical and efficient in operation. It can be used with any conventional sink, readily installed, always kept in service, and easily removed.

Having described my invention, what I believe to be new is:

1. A fitting for insertion into the drain pipe of a wash sink, comprising a tubular member, having outside threads at one end to engage internal threads on said pipe at the outlet of said sink, a sleeve at the opposite end of said member having one end enveloped by said member and presenting an internal shoulder therein facing the firstnamed end, a transverse sieve, a ring engaging said shoulder and having a groove around its inner edge receiving the periphery of said sieve, said ring consisting of two separate halves with abutting ends, and a bail for said member having its ends afllxe d one to each half of the ring.

2. A fittixig f'or insertion into enejdrainpr eor a wash'sink, comprising a tubular member, having outside threads at one end to engage internal threads on said pipe at the outlet of said sinkfi'a sleeve at the opposite end of said'member hsving one end enveloped by said member and presenting an internal shoulder therein facing the firstnamed end, a transverse sieve, a'ri'iigengaging said shoulder and having a groove around its inner edge receiving the periphery of said sieve, said ring consisting of two separate halvis with 5 Number V hal lifsfoi *th'e have perforated-lu s, and the 10 ends of the bail are attached to the lugs.

MAURICE B. EPS'I'EIN.

References Qited in the file of this patent UNITED STATES PATENTS Name Date 948,9(10 McKim Feb. 8, 1910 11511223 'Hii'nsicker Jan. 9, 1912 1073 899 Luther Mar. 16, 1937 

